./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ae696ef581cbe995636ab4900ea04e2b993d78100fba8db2a87ca7d99c3a6d1e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:43:44,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:43:44,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:43:44,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:43:44,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:43:44,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:43:44,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:43:44,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:43:44,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:43:44,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:43:44,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:43:44,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:43:44,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:43:44,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:43:44,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:43:44,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:43:44,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:43:44,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:43:44,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:43:44,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:43:44,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:43:44,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:43:44,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:43:44,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:43:44,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:43:44,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:43:44,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:43:44,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:43:44,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:43:44,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:43:44,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:43:44,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:43:44,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:43:44,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:43:44,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:43:44,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:43:44,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:43:44,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:43:44,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:43:44,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:43:44,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:43:44,502 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:43:44,549 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:43:44,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:43:44,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:43:44,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:43:44,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:43:44,552 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:43:44,552 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:43:44,553 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:43:44,553 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:43:44,553 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:43:44,554 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:43:44,554 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:43:44,555 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:43:44,555 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:43:44,555 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:43:44,555 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:43:44,556 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:43:44,556 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:43:44,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:43:44,557 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:43:44,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:43:44,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:43:44,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:43:44,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:43:44,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:43:44,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:43:44,560 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:43:44,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:43:44,560 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:43:44,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:43:44,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:43:44,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:43:44,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:43:44,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:43:44,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:43:44,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:43:44,563 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:43:44,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:43:44,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:43:44,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:43:44,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:43:44,564 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae696ef581cbe995636ab4900ea04e2b993d78100fba8db2a87ca7d99c3a6d1e [2021-11-23 03:43:44,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:43:44,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:43:44,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:43:44,912 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:43:44,912 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:43:44,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c [2021-11-23 03:43:44,989 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/data/3ec9315b3/d4f5f4063f884657ba7b7b6a706e0381/FLAG82cda80ac [2021-11-23 03:43:45,467 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:43:45,468 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c [2021-11-23 03:43:45,489 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/data/3ec9315b3/d4f5f4063f884657ba7b7b6a706e0381/FLAG82cda80ac [2021-11-23 03:43:45,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/data/3ec9315b3/d4f5f4063f884657ba7b7b6a706e0381 [2021-11-23 03:43:45,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:43:45,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:43:45,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:43:45,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:43:45,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:43:45,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:43:45" (1/1) ... [2021-11-23 03:43:45,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af31fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:45, skipping insertion in model container [2021-11-23 03:43:45,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:43:45" (1/1) ... [2021-11-23 03:43:45,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:43:45,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:43:46,126 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c[37883,37896] [2021-11-23 03:43:46,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:43:46,142 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:43:46,195 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c[37883,37896] [2021-11-23 03:43:46,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:43:46,212 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:43:46,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:46 WrapperNode [2021-11-23 03:43:46,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:43:46,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:43:46,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:43:46,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:43:46,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:46" (1/1) ... [2021-11-23 03:43:46,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:46" (1/1) ... [2021-11-23 03:43:46,330 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 479 [2021-11-23 03:43:46,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:43:46,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:43:46,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:43:46,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:43:46,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:46" (1/1) ... [2021-11-23 03:43:46,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:46" (1/1) ... [2021-11-23 03:43:46,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:46" (1/1) ... [2021-11-23 03:43:46,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:46" (1/1) ... [2021-11-23 03:43:46,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:46" (1/1) ... [2021-11-23 03:43:46,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:46" (1/1) ... [2021-11-23 03:43:46,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:46" (1/1) ... [2021-11-23 03:43:46,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:43:46,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:43:46,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:43:46,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:43:46,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:46" (1/1) ... [2021-11-23 03:43:46,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:43:46,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:43:46,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:43:46,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:43:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:43:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:43:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:43:46,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:43:46,596 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:43:46,598 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:43:46,615 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:43:47,055 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2021-11-23 03:43:47,055 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2021-11-23 03:43:47,055 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:43:47,250 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:43:47,250 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:43:47,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:43:47 BoogieIcfgContainer [2021-11-23 03:43:47,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:43:47,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:43:47,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:43:47,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:43:47,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:43:45" (1/3) ... [2021-11-23 03:43:47,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c11cda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:43:47, skipping insertion in model container [2021-11-23 03:43:47,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:46" (2/3) ... [2021-11-23 03:43:47,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c11cda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:43:47, skipping insertion in model container [2021-11-23 03:43:47,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:43:47" (3/3) ... [2021-11-23 03:43:47,261 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-1a.c [2021-11-23 03:43:47,266 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:43:47,266 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:43:47,316 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:43:47,323 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:43:47,323 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:43:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 82 states have (on average 1.7682926829268293) internal successors, (145), 83 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:43:47,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 03:43:47,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:47,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:43:47,348 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:43:47,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:47,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1837227934, now seen corresponding path program 1 times [2021-11-23 03:43:47,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:47,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078387986] [2021-11-23 03:43:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:47,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:43:47,545 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:47,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078387986] [2021-11-23 03:43:47,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078387986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:47,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:43:47,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:43:47,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687005985] [2021-11-23 03:43:47,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:47,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:43:47,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:43:47,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:43:47,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:43:47,600 INFO L87 Difference]: Start difference. First operand has 84 states, 82 states have (on average 1.7682926829268293) internal successors, (145), 83 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:43:47,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:47,831 INFO L93 Difference]: Finished difference Result 169 states and 293 transitions. [2021-11-23 03:43:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:43:47,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 03:43:47,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:47,843 INFO L225 Difference]: With dead ends: 169 [2021-11-23 03:43:47,859 INFO L226 Difference]: Without dead ends: 83 [2021-11-23 03:43:47,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:43:47,866 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:47,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 179 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:43:47,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-23 03:43:47,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-11-23 03:43:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 82 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:43:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2021-11-23 03:43:47,907 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 19 [2021-11-23 03:43:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:47,908 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2021-11-23 03:43:47,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:43:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2021-11-23 03:43:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 03:43:47,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:47,910 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:43:47,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:43:47,910 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:43:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:47,911 INFO L85 PathProgramCache]: Analyzing trace with hash -260824227, now seen corresponding path program 1 times [2021-11-23 03:43:47,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:47,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897341538] [2021-11-23 03:43:47,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:47,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:43:48,033 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:48,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897341538] [2021-11-23 03:43:48,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897341538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:48,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:43:48,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:43:48,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155443442] [2021-11-23 03:43:48,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:48,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:43:48,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:43:48,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:43:48,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:43:48,037 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:43:48,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:48,210 INFO L93 Difference]: Finished difference Result 178 states and 261 transitions. [2021-11-23 03:43:48,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:43:48,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 03:43:48,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:48,217 INFO L225 Difference]: With dead ends: 178 [2021-11-23 03:43:48,217 INFO L226 Difference]: Without dead ends: 98 [2021-11-23 03:43:48,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:43:48,230 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 8 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:48,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 129 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:43:48,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-23 03:43:48,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-11-23 03:43:48,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.431578947368421) internal successors, (136), 95 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:43:48,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 136 transitions. [2021-11-23 03:43:48,250 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 136 transitions. Word has length 28 [2021-11-23 03:43:48,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:48,250 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 136 transitions. [2021-11-23 03:43:48,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:43:48,251 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 136 transitions. [2021-11-23 03:43:48,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 03:43:48,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:48,252 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:43:48,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:43:48,253 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:43:48,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:48,253 INFO L85 PathProgramCache]: Analyzing trace with hash -16731027, now seen corresponding path program 1 times [2021-11-23 03:43:48,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:48,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758077528] [2021-11-23 03:43:48,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:48,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:43:48,358 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:48,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758077528] [2021-11-23 03:43:48,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758077528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:48,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:43:48,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:43:48,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439517313] [2021-11-23 03:43:48,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:48,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:43:48,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:43:48,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:43:48,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:43:48,362 INFO L87 Difference]: Start difference. First operand 96 states and 136 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:43:48,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:48,472 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2021-11-23 03:43:48,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:43:48,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-23 03:43:48,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:48,474 INFO L225 Difference]: With dead ends: 206 [2021-11-23 03:43:48,474 INFO L226 Difference]: Without dead ends: 113 [2021-11-23 03:43:48,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:43:48,477 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 8 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:48,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 140 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:43:48,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-23 03:43:48,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-11-23 03:43:48,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.4) internal successors, (154), 110 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:43:48,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 154 transitions. [2021-11-23 03:43:48,488 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 154 transitions. Word has length 39 [2021-11-23 03:43:48,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:48,488 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 154 transitions. [2021-11-23 03:43:48,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:43:48,489 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 154 transitions. [2021-11-23 03:43:48,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 03:43:48,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:48,491 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:43:48,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:43:48,492 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:43:48,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:48,492 INFO L85 PathProgramCache]: Analyzing trace with hash -83416498, now seen corresponding path program 1 times [2021-11-23 03:43:48,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:48,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661679172] [2021-11-23 03:43:48,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:48,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:43:48,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:48,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661679172] [2021-11-23 03:43:48,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661679172] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:43:48,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551200244] [2021-11-23 03:43:48,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:48,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:43:48,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:43:48,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:43:48,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:43:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:48,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:43:48,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:43:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:43:48,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:43:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 03:43:49,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551200244] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:43:49,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1588250288] [2021-11-23 03:43:49,159 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2021-11-23 03:43:49,159 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:43:49,164 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:43:49,168 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:43:49,169 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:43:56,940 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:44:11,638 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1440#(and (= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (= |ULTIMATE.start_ssl3_connect_~tmp___0~0#1| 0) (<= |ULTIMATE.start_ssl3_connect_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~tmp___7~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~tmp___3~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~tmp___7~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_compression__id~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~s__s3__flags~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~tmp___5~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~tmp___4~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~num1~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__bbio~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__ctx__stats__sess_connect~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__cert_req~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~s__info_callback~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~cb~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~tmp___9~0#1| 2147483648)) (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__init_buf___0~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~tmp___9~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~s__bbio~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__s3__flags~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~cb~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_connect_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__ctx__info_callback~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~ret~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__wbio~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__debug~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~num1~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~tmp___5~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_connect_~ret~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__s3__tmp__cert_req~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_connect_~state~0#1| |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_compression~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__info_callback~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~tmp~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_compression__id~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__ctx__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~tmp___8~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~tmp___6~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__hit~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_compression~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_connect_~s__wbio~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~tmp___6~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~tmp___8~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_connect_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~tmp~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__hit~0#1| 2147483647))' at error location [2021-11-23 03:44:11,638 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:44:11,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:44:11,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2021-11-23 03:44:11,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382652186] [2021-11-23 03:44:11,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:44:11,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:44:11,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:11,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:44:11,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2021-11-23 03:44:11,642 INFO L87 Difference]: Start difference. First operand 111 states and 154 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:11,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:11,819 INFO L93 Difference]: Finished difference Result 464 states and 645 transitions. [2021-11-23 03:44:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:44:11,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-23 03:44:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:11,824 INFO L225 Difference]: With dead ends: 464 [2021-11-23 03:44:11,824 INFO L226 Difference]: Without dead ends: 462 [2021-11-23 03:44:11,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2021-11-23 03:44:11,827 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 598 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:11,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [598 Valid, 681 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:44:11,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-23 03:44:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 385. [2021-11-23 03:44:11,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.4322916666666667) internal successors, (550), 384 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 550 transitions. [2021-11-23 03:44:11,853 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 550 transitions. Word has length 52 [2021-11-23 03:44:11,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:11,853 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 550 transitions. [2021-11-23 03:44:11,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 550 transitions. [2021-11-23 03:44:11,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-23 03:44:11,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:11,860 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:11,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 03:44:12,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:44:12,074 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:12,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:12,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1669111524, now seen corresponding path program 1 times [2021-11-23 03:44:12,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:12,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667617196] [2021-11-23 03:44:12,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:12,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 03:44:12,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:12,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667617196] [2021-11-23 03:44:12,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667617196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:12,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:12,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:12,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430445646] [2021-11-23 03:44:12,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:12,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:12,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:12,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:12,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:12,213 INFO L87 Difference]: Start difference. First operand 385 states and 550 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:12,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:12,355 INFO L93 Difference]: Finished difference Result 944 states and 1413 transitions. [2021-11-23 03:44:12,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:12,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-23 03:44:12,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:12,362 INFO L225 Difference]: With dead ends: 944 [2021-11-23 03:44:12,362 INFO L226 Difference]: Without dead ends: 558 [2021-11-23 03:44:12,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:12,365 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 50 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:12,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 136 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:44:12,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-11-23 03:44:12,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 537. [2021-11-23 03:44:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.4813432835820894) internal successors, (794), 536 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:12,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 794 transitions. [2021-11-23 03:44:12,396 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 794 transitions. Word has length 99 [2021-11-23 03:44:12,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:12,397 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 794 transitions. [2021-11-23 03:44:12,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:12,398 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 794 transitions. [2021-11-23 03:44:12,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 03:44:12,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:12,406 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:12,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:44:12,406 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:12,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:12,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1052585773, now seen corresponding path program 2 times [2021-11-23 03:44:12,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:12,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793626536] [2021-11-23 03:44:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:12,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-23 03:44:12,493 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:12,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793626536] [2021-11-23 03:44:12,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793626536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:12,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:12,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:12,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368683283] [2021-11-23 03:44:12,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:12,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:12,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:12,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:12,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:12,495 INFO L87 Difference]: Start difference. First operand 537 states and 794 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:12,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:12,649 INFO L93 Difference]: Finished difference Result 1375 states and 2097 transitions. [2021-11-23 03:44:12,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:12,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-23 03:44:12,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:12,657 INFO L225 Difference]: With dead ends: 1375 [2021-11-23 03:44:12,657 INFO L226 Difference]: Without dead ends: 790 [2021-11-23 03:44:12,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:12,661 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 59 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:12,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 120 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:44:12,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-11-23 03:44:12,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 752. [2021-11-23 03:44:12,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 1.430093209054594) internal successors, (1074), 751 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1074 transitions. [2021-11-23 03:44:12,694 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1074 transitions. Word has length 119 [2021-11-23 03:44:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:12,698 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 1074 transitions. [2021-11-23 03:44:12,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:12,699 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1074 transitions. [2021-11-23 03:44:12,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-23 03:44:12,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:12,712 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 8, 8, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:12,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:44:12,712 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:12,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:12,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1514730875, now seen corresponding path program 1 times [2021-11-23 03:44:12,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:12,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89821940] [2021-11-23 03:44:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:12,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:12,796 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-23 03:44:12,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:12,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89821940] [2021-11-23 03:44:12,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89821940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:12,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:12,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:12,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096174698] [2021-11-23 03:44:12,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:12,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:12,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:12,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:12,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:12,799 INFO L87 Difference]: Start difference. First operand 752 states and 1074 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:12,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:12,938 INFO L93 Difference]: Finished difference Result 1648 states and 2364 transitions. [2021-11-23 03:44:12,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:12,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-23 03:44:12,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:12,945 INFO L225 Difference]: With dead ends: 1648 [2021-11-23 03:44:12,945 INFO L226 Difference]: Without dead ends: 854 [2021-11-23 03:44:12,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:12,947 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 61 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:12,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 116 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:44:12,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-11-23 03:44:12,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 821. [2021-11-23 03:44:12,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 820 states have (on average 1.4121951219512194) internal successors, (1158), 820 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:12,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1158 transitions. [2021-11-23 03:44:12,976 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1158 transitions. Word has length 139 [2021-11-23 03:44:12,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:12,977 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 1158 transitions. [2021-11-23 03:44:12,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:12,977 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1158 transitions. [2021-11-23 03:44:12,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-23 03:44:12,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:12,981 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:12,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:44:12,981 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:12,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:12,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1065044350, now seen corresponding path program 1 times [2021-11-23 03:44:12,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:12,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112948994] [2021-11-23 03:44:12,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:12,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-11-23 03:44:13,037 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:13,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112948994] [2021-11-23 03:44:13,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112948994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:13,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:13,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:13,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151473794] [2021-11-23 03:44:13,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:13,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:13,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:13,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:13,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:13,040 INFO L87 Difference]: Start difference. First operand 821 states and 1158 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:13,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:13,191 INFO L93 Difference]: Finished difference Result 1824 states and 2593 transitions. [2021-11-23 03:44:13,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:13,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-11-23 03:44:13,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:13,198 INFO L225 Difference]: With dead ends: 1824 [2021-11-23 03:44:13,198 INFO L226 Difference]: Without dead ends: 970 [2021-11-23 03:44:13,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:13,201 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 63 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:13,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 114 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:44:13,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2021-11-23 03:44:13,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 937. [2021-11-23 03:44:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 936 states have (on average 1.4081196581196582) internal successors, (1318), 936 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:13,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1318 transitions. [2021-11-23 03:44:13,234 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1318 transitions. Word has length 160 [2021-11-23 03:44:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:13,234 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1318 transitions. [2021-11-23 03:44:13,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:13,236 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1318 transitions. [2021-11-23 03:44:13,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-23 03:44:13,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:13,239 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 10, 10, 8, 8, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:13,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:44:13,240 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:13,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:13,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1392788605, now seen corresponding path program 1 times [2021-11-23 03:44:13,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:13,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559932363] [2021-11-23 03:44:13,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:13,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-23 03:44:13,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:13,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559932363] [2021-11-23 03:44:13,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559932363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:13,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:13,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:13,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780363774] [2021-11-23 03:44:13,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:13,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:13,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:13,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:13,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:13,335 INFO L87 Difference]: Start difference. First operand 937 states and 1318 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:13,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:13,505 INFO L93 Difference]: Finished difference Result 2208 states and 3201 transitions. [2021-11-23 03:44:13,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:13,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2021-11-23 03:44:13,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:13,514 INFO L225 Difference]: With dead ends: 2208 [2021-11-23 03:44:13,514 INFO L226 Difference]: Without dead ends: 1254 [2021-11-23 03:44:13,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:13,519 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 65 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:13,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 112 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:44:13,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-11-23 03:44:13,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1201. [2021-11-23 03:44:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 1.455) internal successors, (1746), 1200 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:13,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1746 transitions. [2021-11-23 03:44:13,560 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1746 transitions. Word has length 187 [2021-11-23 03:44:13,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:13,561 INFO L470 AbstractCegarLoop]: Abstraction has 1201 states and 1746 transitions. [2021-11-23 03:44:13,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:13,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1746 transitions. [2021-11-23 03:44:13,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-23 03:44:13,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:13,566 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 11, 11, 11, 11, 9, 9, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:13,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:44:13,567 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:13,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:13,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1822522653, now seen corresponding path program 1 times [2021-11-23 03:44:13,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:13,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509800422] [2021-11-23 03:44:13,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:13,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2021-11-23 03:44:13,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:13,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509800422] [2021-11-23 03:44:13,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509800422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:13,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:13,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:13,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894171105] [2021-11-23 03:44:13,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:13,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:13,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:13,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:13,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:13,652 INFO L87 Difference]: Start difference. First operand 1201 states and 1746 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:13,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:13,828 INFO L93 Difference]: Finished difference Result 2432 states and 3525 transitions. [2021-11-23 03:44:13,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:13,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2021-11-23 03:44:13,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:13,836 INFO L225 Difference]: With dead ends: 2432 [2021-11-23 03:44:13,836 INFO L226 Difference]: Without dead ends: 1222 [2021-11-23 03:44:13,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:13,841 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 66 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:13,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 109 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:44:13,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2021-11-23 03:44:13,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1189. [2021-11-23 03:44:13,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1188 states have (on average 1.4393939393939394) internal successors, (1710), 1188 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:13,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1710 transitions. [2021-11-23 03:44:13,883 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1710 transitions. Word has length 220 [2021-11-23 03:44:13,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:13,883 INFO L470 AbstractCegarLoop]: Abstraction has 1189 states and 1710 transitions. [2021-11-23 03:44:13,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:13,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1710 transitions. [2021-11-23 03:44:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-23 03:44:13,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:13,889 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:13,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:44:13,890 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:13,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:13,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1496437869, now seen corresponding path program 1 times [2021-11-23 03:44:13,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:13,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825392813] [2021-11-23 03:44:13,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:13,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2021-11-23 03:44:13,992 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:13,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825392813] [2021-11-23 03:44:13,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825392813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:13,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:13,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:13,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215601217] [2021-11-23 03:44:13,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:13,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:13,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:13,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:13,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:13,995 INFO L87 Difference]: Start difference. First operand 1189 states and 1710 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:14,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:14,160 INFO L93 Difference]: Finished difference Result 2552 states and 3653 transitions. [2021-11-23 03:44:14,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:14,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2021-11-23 03:44:14,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:14,169 INFO L225 Difference]: With dead ends: 2552 [2021-11-23 03:44:14,169 INFO L226 Difference]: Without dead ends: 1366 [2021-11-23 03:44:14,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:14,172 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 40 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:14,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 140 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:44:14,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2021-11-23 03:44:14,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1273. [2021-11-23 03:44:14,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1272 states have (on average 1.4261006289308176) internal successors, (1814), 1272 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:14,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1814 transitions. [2021-11-23 03:44:14,217 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1814 transitions. Word has length 233 [2021-11-23 03:44:14,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:14,218 INFO L470 AbstractCegarLoop]: Abstraction has 1273 states and 1814 transitions. [2021-11-23 03:44:14,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:14,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1814 transitions. [2021-11-23 03:44:14,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-23 03:44:14,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:14,224 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 12, 12, 12, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:14,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 03:44:14,224 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:14,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:14,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1076719117, now seen corresponding path program 1 times [2021-11-23 03:44:14,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:14,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588018667] [2021-11-23 03:44:14,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:14,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2021-11-23 03:44:14,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:14,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588018667] [2021-11-23 03:44:14,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588018667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:14,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:14,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:14,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898382090] [2021-11-23 03:44:14,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:14,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:14,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:14,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:14,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:14,299 INFO L87 Difference]: Start difference. First operand 1273 states and 1814 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:14,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:14,484 INFO L93 Difference]: Finished difference Result 2568 states and 3653 transitions. [2021-11-23 03:44:14,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:14,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 255 [2021-11-23 03:44:14,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:14,492 INFO L225 Difference]: With dead ends: 2568 [2021-11-23 03:44:14,492 INFO L226 Difference]: Without dead ends: 1298 [2021-11-23 03:44:14,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:14,495 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 67 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:14,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 114 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:44:14,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-11-23 03:44:14,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1273. [2021-11-23 03:44:14,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1272 states have (on average 1.4072327044025157) internal successors, (1790), 1272 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:14,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1790 transitions. [2021-11-23 03:44:14,539 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1790 transitions. Word has length 255 [2021-11-23 03:44:14,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:14,540 INFO L470 AbstractCegarLoop]: Abstraction has 1273 states and 1790 transitions. [2021-11-23 03:44:14,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:44:14,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1790 transitions. [2021-11-23 03:44:14,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-23 03:44:14,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:14,546 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 9, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:14,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 03:44:14,546 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:14,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:14,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1533553425, now seen corresponding path program 1 times [2021-11-23 03:44:14,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:14,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384806107] [2021-11-23 03:44:14,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:14,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 437 proven. 11 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2021-11-23 03:44:14,647 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:14,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384806107] [2021-11-23 03:44:14,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384806107] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:44:14,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891584139] [2021-11-23 03:44:14,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:14,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:44:14,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:44:14,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:44:14,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:44:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:14,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:44:14,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:44:15,481 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 437 proven. 11 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2021-11-23 03:44:15,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:44:15,773 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 437 proven. 11 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2021-11-23 03:44:15,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891584139] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:44:15,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1854983110] [2021-11-23 03:44:15,779 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2021-11-23 03:44:15,779 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:44:15,779 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:44:15,780 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:44:15,780 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:46:20,861 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:46:48,760 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '30505#(and (= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (= |ULTIMATE.start_ssl3_connect_~tmp___0~0#1| 0) (<= |ULTIMATE.start_ssl3_connect_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~tmp___7~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~tmp___3~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~tmp___7~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_compression__id~0#1| 2147483647) (<= 0 |#NULL.base|) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~tmp___5~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~tmp___4~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~num1~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__bbio~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__init_buf___0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__ctx__stats__sess_connect~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__cert_req~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_connect_~skip~0#1|) (<= |ULTIMATE.start_ssl3_connect_~s__info_callback~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~cb~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~tmp___9~0#1| 2147483648)) (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__init_buf___0~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~skip~0#1| 0) (<= |ULTIMATE.start_ssl3_connect_~tmp___9~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~s__bbio~0#1| 2147483647) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~cb~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__ctx__info_callback~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~ret~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__wbio~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__debug~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~num1~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~tmp___5~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_connect_~ret~0#1|)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__s3__tmp__cert_req~0#1| 2147483648)) (<= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_compression~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__info_callback~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~tmp~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_compression__id~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__ctx__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~tmp___8~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~tmp___6~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~s__hit~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__new_compression~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_ssl3_connect_~s__wbio~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~tmp___6~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~tmp___8~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_connect_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_connect_~tmp~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_connect_~s__hit~0#1| 2147483647))' at error location [2021-11-23 03:46:48,761 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:46:48,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:46:48,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-23 03:46:48,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436342612] [2021-11-23 03:46:48,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:46:48,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:46:48,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:46:48,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:46:48,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=756, Invalid=4500, Unknown=0, NotChecked=0, Total=5256 [2021-11-23 03:46:48,766 INFO L87 Difference]: Start difference. First operand 1273 states and 1790 transitions. Second operand has 8 states, 8 states have (on average 29.625) internal successors, (237), 8 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:46:49,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:46:49,398 INFO L93 Difference]: Finished difference Result 3488 states and 4937 transitions. [2021-11-23 03:46:49,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:46:49,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 29.625) internal successors, (237), 8 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270 [2021-11-23 03:46:49,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:46:49,411 INFO L225 Difference]: With dead ends: 3488 [2021-11-23 03:46:49,411 INFO L226 Difference]: Without dead ends: 2210 [2021-11-23 03:46:49,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 742 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2200 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=780, Invalid=4920, Unknown=0, NotChecked=0, Total=5700 [2021-11-23 03:46:49,417 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 304 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:46:49,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 373 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:46:49,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2021-11-23 03:46:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 1696. [2021-11-23 03:46:49,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1695 states have (on average 1.3787610619469026) internal successors, (2337), 1695 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:46:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2337 transitions. [2021-11-23 03:46:49,486 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2337 transitions. Word has length 270 [2021-11-23 03:46:49,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:46:49,486 INFO L470 AbstractCegarLoop]: Abstraction has 1696 states and 2337 transitions. [2021-11-23 03:46:49,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.625) internal successors, (237), 8 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:46:49,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2337 transitions. [2021-11-23 03:46:49,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-23 03:46:49,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:46:49,494 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 11, 10, 9, 9, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:46:49,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:46:49,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-23 03:46:49,710 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:46:49,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:46:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1560401192, now seen corresponding path program 1 times [2021-11-23 03:46:49,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:46:49,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274823545] [2021-11-23 03:46:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:49,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:46:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:46:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2021-11-23 03:46:49,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:46:49,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274823545] [2021-11-23 03:46:49,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274823545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:46:49,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:46:49,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:46:49,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578645423] [2021-11-23 03:46:49,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:46:49,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:46:49,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:46:49,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:46:49,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:46:49,816 INFO L87 Difference]: Start difference. First operand 1696 states and 2337 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:46:49,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:46:49,963 INFO L93 Difference]: Finished difference Result 2953 states and 4035 transitions. [2021-11-23 03:46:49,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:46:49,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2021-11-23 03:46:49,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:46:49,965 INFO L225 Difference]: With dead ends: 2953 [2021-11-23 03:46:49,965 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 03:46:49,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:46:49,969 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 41 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:46:49,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 141 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:46:49,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 03:46:49,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 03:46:49,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:46:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 03:46:49,971 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 306 [2021-11-23 03:46:49,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:46:49,971 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 03:46:49,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:46:49,972 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 03:46:49,972 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 03:46:49,974 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:46:49,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 03:46:49,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 03:46:51,651 INFO L858 garLoopResultBuilder]: For program point L367(lines 367 371) no Hoare annotation was computed. [2021-11-23 03:46:51,651 INFO L858 garLoopResultBuilder]: For program point L235(lines 235 252) no Hoare annotation was computed. [2021-11-23 03:46:51,653 INFO L858 garLoopResultBuilder]: For program point L202(lines 202 551) no Hoare annotation was computed. [2021-11-23 03:46:51,653 INFO L858 garLoopResultBuilder]: For program point L169(lines 169 562) no Hoare annotation was computed. [2021-11-23 03:46:51,653 INFO L858 garLoopResultBuilder]: For program point L235-2(lines 213 545) no Hoare annotation was computed. [2021-11-23 03:46:51,653 INFO L858 garLoopResultBuilder]: For program point L136(lines 136 573) no Hoare annotation was computed. [2021-11-23 03:46:51,653 INFO L854 garLoopResultBuilder]: At program point L203(lines 199 552) the Hoare annotation is: (let ((.cse0 (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|)))) (or (and .cse0 (= 4560 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (or (= 3 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1|) (= 4560 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1|))) (and (not (= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)) .cse0 (<= 4560 |ULTIMATE.start_ssl3_connect_~s__state~0#1|)))) [2021-11-23 03:46:51,653 INFO L854 garLoopResultBuilder]: At program point L137(lines 133 574) the Hoare annotation is: (and (not (= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4432) (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|)) (or (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 3) (<= 4352 |ULTIMATE.start_ssl3_connect_~s__state~0#1|))) [2021-11-23 03:46:51,653 INFO L858 garLoopResultBuilder]: For program point L501-1(lines 501 513) no Hoare annotation was computed. [2021-11-23 03:46:51,653 INFO L858 garLoopResultBuilder]: For program point L435(lines 435 439) no Hoare annotation was computed. [2021-11-23 03:46:51,654 INFO L858 garLoopResultBuilder]: For program point L237(lines 237 242) no Hoare annotation was computed. [2021-11-23 03:46:51,654 INFO L854 garLoopResultBuilder]: At program point L205(lines 205 550) the Hoare annotation is: (let ((.cse0 (not (= 4384 |ULTIMATE.start_ssl3_connect_~s__state~0#1|))) (.cse1 (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|))) (.cse2 (or (= 3 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1|) (= 4560 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1|)))) (or (<= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (and (not (= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)) .cse0 .cse1) (and .cse0 .cse1 .cse2) (and .cse2 (= 3 |ULTIMATE.start_ssl3_connect_~s__state~0#1|)))) [2021-11-23 03:46:51,654 INFO L858 garLoopResultBuilder]: For program point L172(lines 172 561) no Hoare annotation was computed. [2021-11-23 03:46:51,654 INFO L858 garLoopResultBuilder]: For program point L139(lines 139 572) no Hoare annotation was computed. [2021-11-23 03:46:51,654 INFO L854 garLoopResultBuilder]: At program point L206(lines 205 550) the Hoare annotation is: (let ((.cse0 (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|))) (.cse1 (or (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 3) (<= 4352 |ULTIMATE.start_ssl3_connect_~s__state~0#1|))) (.cse2 (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4352))) (or (and (not (= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse2 (or (= 3 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1|) (= 4560 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1|))))) [2021-11-23 03:46:51,654 INFO L854 garLoopResultBuilder]: At program point L173(lines 163 564) the Hoare annotation is: (and (<= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|)) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4480)) [2021-11-23 03:46:51,654 INFO L858 garLoopResultBuilder]: For program point L504(lines 504 509) no Hoare annotation was computed. [2021-11-23 03:46:51,654 INFO L858 garLoopResultBuilder]: For program point L273-2(lines 213 545) no Hoare annotation was computed. [2021-11-23 03:46:51,655 INFO L858 garLoopResultBuilder]: For program point L406(lines 406 410) no Hoare annotation was computed. [2021-11-23 03:46:51,655 INFO L858 garLoopResultBuilder]: For program point L340-2(lines 213 545) no Hoare annotation was computed. [2021-11-23 03:46:51,655 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 560) no Hoare annotation was computed. [2021-11-23 03:46:51,655 INFO L858 garLoopResultBuilder]: For program point L142(lines 142 571) no Hoare annotation was computed. [2021-11-23 03:46:51,655 INFO L858 garLoopResultBuilder]: For program point L109-1(lines 76 630) no Hoare annotation was computed. [2021-11-23 03:46:51,655 INFO L854 garLoopResultBuilder]: At program point L143(lines 139 572) the Hoare annotation is: (and (not (= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)) (not (= 4384 |ULTIMATE.start_ssl3_connect_~s__state~0#1|)) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4432) (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|)) (or (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 3) (<= 4352 |ULTIMATE.start_ssl3_connect_~s__state~0#1|))) [2021-11-23 03:46:51,655 INFO L858 garLoopResultBuilder]: For program point L243(lines 243 248) no Hoare annotation was computed. [2021-11-23 03:46:51,655 INFO L858 garLoopResultBuilder]: For program point L178(lines 178 559) no Hoare annotation was computed. [2021-11-23 03:46:51,656 INFO L858 garLoopResultBuilder]: For program point L145(lines 145 570) no Hoare annotation was computed. [2021-11-23 03:46:51,656 INFO L854 garLoopResultBuilder]: At program point L112(lines 112 581) the Hoare annotation is: (let ((.cse0 (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|))) (.cse1 (or (= 3 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1|) (= 4560 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1|)))) (or (and .cse0 (= 4560 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) .cse1) (and (not (= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)) .cse0) (and (<= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) .cse0 (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4528)) (and .cse0 (or (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 3) (<= 4352 |ULTIMATE.start_ssl3_connect_~s__state~0#1|)) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4352) .cse1))) [2021-11-23 03:46:51,656 INFO L858 garLoopResultBuilder]: For program point L443-2(lines 213 545) no Hoare annotation was computed. [2021-11-23 03:46:51,656 INFO L854 garLoopResultBuilder]: At program point L179(lines 175 560) the Hoare annotation is: (and (<= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|)) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4512)) [2021-11-23 03:46:51,656 INFO L858 garLoopResultBuilder]: For program point L378(lines 378 382) no Hoare annotation was computed. [2021-11-23 03:46:51,656 INFO L858 garLoopResultBuilder]: For program point L181(lines 181 558) no Hoare annotation was computed. [2021-11-23 03:46:51,656 INFO L858 garLoopResultBuilder]: For program point L148(lines 148 569) no Hoare annotation was computed. [2021-11-23 03:46:51,656 INFO L858 garLoopResultBuilder]: For program point L115(lines 115 580) no Hoare annotation was computed. [2021-11-23 03:46:51,656 INFO L854 garLoopResultBuilder]: At program point L149(lines 145 570) the Hoare annotation is: (and (not (= 4384 |ULTIMATE.start_ssl3_connect_~s__state~0#1|)) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4432) (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|)) (or (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 3) (<= 4352 |ULTIMATE.start_ssl3_connect_~s__state~0#1|))) [2021-11-23 03:46:51,657 INFO L854 garLoopResultBuilder]: At program point L546(lines 109 612) the Hoare annotation is: (let ((.cse0 (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|))) (.cse1 (or (= 3 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1|) (= 4560 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1|)))) (or (and .cse0 (= 4560 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) .cse1) (and (not (= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)) .cse0) (and (<= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) .cse0 (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4528)) (and .cse0 (or (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 3) (<= 4352 |ULTIMATE.start_ssl3_connect_~s__state~0#1|)) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4352) .cse1))) [2021-11-23 03:46:51,657 INFO L861 garLoopResultBuilder]: At program point L613(lines 108 614) the Hoare annotation is: true [2021-11-23 03:46:51,657 INFO L858 garLoopResultBuilder]: For program point L184(lines 184 557) no Hoare annotation was computed. [2021-11-23 03:46:51,657 INFO L858 garLoopResultBuilder]: For program point L151(lines 151 568) no Hoare annotation was computed. [2021-11-23 03:46:51,657 INFO L858 garLoopResultBuilder]: For program point L118(lines 118 579) no Hoare annotation was computed. [2021-11-23 03:46:51,657 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 03:46:51,657 INFO L854 garLoopResultBuilder]: At program point L218(lines 115 580) the Hoare annotation is: (and (not (= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)) (not (= 4384 |ULTIMATE.start_ssl3_connect_~s__state~0#1|)) (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|))) [2021-11-23 03:46:51,658 INFO L854 garLoopResultBuilder]: At program point L185(lines 181 558) the Hoare annotation is: (and (<= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|)) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4512)) [2021-11-23 03:46:51,658 INFO L858 garLoopResultBuilder]: For program point L582(lines 582 610) no Hoare annotation was computed. [2021-11-23 03:46:51,658 INFO L858 garLoopResultBuilder]: For program point L583(lines 583 607) no Hoare annotation was computed. [2021-11-23 03:46:51,658 INFO L858 garLoopResultBuilder]: For program point L352(lines 352 357) no Hoare annotation was computed. [2021-11-23 03:46:51,658 INFO L858 garLoopResultBuilder]: For program point L319-1(lines 319 333) no Hoare annotation was computed. [2021-11-23 03:46:51,658 INFO L858 garLoopResultBuilder]: For program point L187(lines 187 556) no Hoare annotation was computed. [2021-11-23 03:46:51,658 INFO L858 garLoopResultBuilder]: For program point L154(lines 154 567) no Hoare annotation was computed. [2021-11-23 03:46:51,658 INFO L858 garLoopResultBuilder]: For program point L121(lines 121 578) no Hoare annotation was computed. [2021-11-23 03:46:51,658 INFO L858 garLoopResultBuilder]: For program point L584(lines 584 593) no Hoare annotation was computed. [2021-11-23 03:46:51,659 INFO L858 garLoopResultBuilder]: For program point L584-2(lines 583 605) no Hoare annotation was computed. [2021-11-23 03:46:51,659 INFO L854 garLoopResultBuilder]: At program point L155(lines 151 568) the Hoare annotation is: (and (<= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|)) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4448)) [2021-11-23 03:46:51,659 INFO L858 garLoopResultBuilder]: For program point L586(lines 586 590) no Hoare annotation was computed. [2021-11-23 03:46:51,659 INFO L858 garLoopResultBuilder]: For program point L454(lines 454 459) no Hoare annotation was computed. [2021-11-23 03:46:51,659 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 03:46:51,659 INFO L858 garLoopResultBuilder]: For program point L190(lines 190 555) no Hoare annotation was computed. [2021-11-23 03:46:51,659 INFO L858 garLoopResultBuilder]: For program point L157(lines 157 566) no Hoare annotation was computed. [2021-11-23 03:46:51,659 INFO L858 garLoopResultBuilder]: For program point L223-2(lines 213 545) no Hoare annotation was computed. [2021-11-23 03:46:51,659 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 577) no Hoare annotation was computed. [2021-11-23 03:46:51,660 INFO L858 garLoopResultBuilder]: For program point L488(lines 488 492) no Hoare annotation was computed. [2021-11-23 03:46:51,660 INFO L858 garLoopResultBuilder]: For program point L323-2(lines 321 333) no Hoare annotation was computed. [2021-11-23 03:46:51,660 INFO L854 garLoopResultBuilder]: At program point L191(lines 187 556) the Hoare annotation is: (and (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|)) (<= 4512 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4528)) [2021-11-23 03:46:51,660 INFO L858 garLoopResultBuilder]: For program point L423(lines 423 427) no Hoare annotation was computed. [2021-11-23 03:46:51,660 INFO L858 garLoopResultBuilder]: For program point L259(lines 259 264) no Hoare annotation was computed. [2021-11-23 03:46:51,660 INFO L858 garLoopResultBuilder]: For program point L193(lines 193 554) no Hoare annotation was computed. [2021-11-23 03:46:51,660 INFO L858 garLoopResultBuilder]: For program point L160(lines 160 565) no Hoare annotation was computed. [2021-11-23 03:46:51,660 INFO L858 garLoopResultBuilder]: For program point L127(lines 127 576) no Hoare annotation was computed. [2021-11-23 03:46:51,660 INFO L854 garLoopResultBuilder]: At program point L161(lines 157 566) the Hoare annotation is: (and (<= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|)) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4480)) [2021-11-23 03:46:51,661 INFO L858 garLoopResultBuilder]: For program point L196(lines 196 553) no Hoare annotation was computed. [2021-11-23 03:46:51,661 INFO L858 garLoopResultBuilder]: For program point L163(lines 163 564) no Hoare annotation was computed. [2021-11-23 03:46:51,661 INFO L858 garLoopResultBuilder]: For program point L130(lines 130 575) no Hoare annotation was computed. [2021-11-23 03:46:51,661 INFO L858 garLoopResultBuilder]: For program point L395(lines 395 399) no Hoare annotation was computed. [2021-11-23 03:46:51,661 INFO L858 garLoopResultBuilder]: For program point L362(lines 362 366) no Hoare annotation was computed. [2021-11-23 03:46:51,661 INFO L854 garLoopResultBuilder]: At program point L197(lines 193 554) the Hoare annotation is: (and (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|)) (<= 4512 |ULTIMATE.start_ssl3_connect_~s__state~0#1|)) [2021-11-23 03:46:51,661 INFO L854 garLoopResultBuilder]: At program point L131(lines 127 576) the Hoare annotation is: (and (not (= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)) (not (= 4384 |ULTIMATE.start_ssl3_connect_~s__state~0#1|)) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4432) (not (= 5 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|)) (or (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 3) (<= 4352 |ULTIMATE.start_ssl3_connect_~s__state~0#1|))) [2021-11-23 03:46:51,661 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 624) no Hoare annotation was computed. [2021-11-23 03:46:51,662 INFO L854 garLoopResultBuilder]: At program point L363(lines 76 630) the Hoare annotation is: false [2021-11-23 03:46:51,662 INFO L861 garLoopResultBuilder]: At program point L628(lines 76 630) the Hoare annotation is: true [2021-11-23 03:46:51,662 INFO L858 garLoopResultBuilder]: For program point L298-2(lines 213 545) no Hoare annotation was computed. [2021-11-23 03:46:51,662 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 552) no Hoare annotation was computed. [2021-11-23 03:46:51,662 INFO L858 garLoopResultBuilder]: For program point L166(lines 166 563) no Hoare annotation was computed. [2021-11-23 03:46:51,662 INFO L858 garLoopResultBuilder]: For program point L133(lines 133 574) no Hoare annotation was computed. [2021-11-23 03:46:51,662 INFO L858 garLoopResultBuilder]: For program point L464(lines 464 468) no Hoare annotation was computed. [2021-11-23 03:46:51,665 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:46:51,667 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:46:51,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:46:51 BoogieIcfgContainer [2021-11-23 03:46:51,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:46:51,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:46:51,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:46:51,690 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:46:51,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:43:47" (3/4) ... [2021-11-23 03:46:51,693 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 03:46:51,710 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2021-11-23 03:46:51,711 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-23 03:46:51,712 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-23 03:46:51,713 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:46:51,800 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:46:51,801 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:46:51,801 INFO L158 Benchmark]: Toolchain (without parser) took 185988.52ms. Allocated memory was 100.7MB in the beginning and 5.2GB in the end (delta: 5.1GB). Free memory was 65.2MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 3.0GB. Max. memory is 16.1GB. [2021-11-23 03:46:51,802 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory was 62.8MB in the beginning and 62.8MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:46:51,802 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.17ms. Allocated memory is still 100.7MB. Free memory was 65.2MB in the beginning and 73.1MB in the end (delta: -7.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 03:46:51,802 INFO L158 Benchmark]: Boogie Procedure Inliner took 112.71ms. Allocated memory is still 100.7MB. Free memory was 73.1MB in the beginning and 70.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:46:51,803 INFO L158 Benchmark]: Boogie Preprocessor took 76.84ms. Allocated memory is still 100.7MB. Free memory was 70.3MB in the beginning and 68.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:46:51,803 INFO L158 Benchmark]: RCFGBuilder took 833.92ms. Allocated memory is still 100.7MB. Free memory was 68.1MB in the beginning and 61.3MB in the end (delta: 6.8MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2021-11-23 03:46:51,803 INFO L158 Benchmark]: TraceAbstraction took 184434.13ms. Allocated memory was 100.7MB in the beginning and 5.2GB in the end (delta: 5.1GB). Free memory was 60.8MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 3.0GB. Max. memory is 16.1GB. [2021-11-23 03:46:51,804 INFO L158 Benchmark]: Witness Printer took 111.42ms. Allocated memory is still 5.2GB. Free memory was 2.2GB in the beginning and 2.2GB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:46:51,806 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory was 62.8MB in the beginning and 62.8MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 413.17ms. Allocated memory is still 100.7MB. Free memory was 65.2MB in the beginning and 73.1MB in the end (delta: -7.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 112.71ms. Allocated memory is still 100.7MB. Free memory was 73.1MB in the beginning and 70.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.84ms. Allocated memory is still 100.7MB. Free memory was 70.3MB in the beginning and 68.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 833.92ms. Allocated memory is still 100.7MB. Free memory was 68.1MB in the beginning and 61.3MB in the end (delta: 6.8MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. * TraceAbstraction took 184434.13ms. Allocated memory was 100.7MB in the beginning and 5.2GB in the end (delta: 5.1GB). Free memory was 60.8MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 3.0GB. Max. memory is 16.1GB. * Witness Printer took 111.42ms. Allocated memory is still 5.2GB. Free memory was 2.2GB in the beginning and 2.2GB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 624]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 184.4s, OverallIterations: 14, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1430 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1430 mSDsluCounter, 2604 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1274 mSDsCounter, 432 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2238 IncrementalHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 432 mSolverCounterUnsat, 1485 mSDtfsCounter, 2238 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1011 GetRequests, 889 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2421 ImplicationChecksByTransitivity, 42.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1696occurred in iteration=13, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 924 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 20 PreInvPairs, 156 NumberOfFragments, 404 HoareAnnotationTreeSize, 20 FomulaSimplifications, 10650 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 20 FomulaSimplificationsInter, 36300 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 2448 NumberOfCodeBlocks, 2448 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 2752 ConstructedInterpolants, 0 QuantifiedInterpolants, 4216 SizeOfPredicates, 5 NumberOfNonLiveVariables, 676 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 8486/8607 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 112]: Loop Invariant Derived loop invariant: ((((!(5 == blastFlag) && 4560 == s__state) && (3 == s__s3__tmp__next_state___0 || 4560 == s__s3__tmp__next_state___0)) || (!(blastFlag == 4) && !(5 == blastFlag))) || ((4432 <= s__state && !(5 == blastFlag)) && s__state <= 4528)) || (((!(5 == blastFlag) && (s__state <= 3 || 4352 <= s__state)) && s__state <= 4352) && (3 == s__s3__tmp__next_state___0 || 4560 == s__s3__tmp__next_state___0)) - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: ((((!(5 == blastFlag) && 4560 == s__state) && (3 == s__s3__tmp__next_state___0 || 4560 == s__s3__tmp__next_state___0)) || (!(blastFlag == 4) && !(5 == blastFlag))) || ((4432 <= s__state && !(5 == blastFlag)) && s__state <= 4528)) || (((!(5 == blastFlag) && (s__state <= 3 || 4352 <= s__state)) && s__state <= 4352) && (3 == s__s3__tmp__next_state___0 || 4560 == s__s3__tmp__next_state___0)) - InvariantResult [Line: 108]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 163]: Loop Invariant Derived loop invariant: (4432 <= s__state && !(5 == blastFlag)) && s__state <= 4480 - InvariantResult [Line: 115]: Loop Invariant Derived loop invariant: (!(blastFlag == 4) && !(4384 == s__state)) && !(5 == blastFlag) - InvariantResult [Line: 175]: Loop Invariant Derived loop invariant: (4432 <= s__state && !(5 == blastFlag)) && s__state <= 4512 - InvariantResult [Line: 193]: Loop Invariant Derived loop invariant: !(5 == blastFlag) && 4512 <= s__state - InvariantResult [Line: 205]: Loop Invariant Derived loop invariant: ((4432 <= s__state || ((!(blastFlag == 4) && !(4384 == s__state)) && !(5 == blastFlag))) || ((!(4384 == s__state) && !(5 == blastFlag)) && (3 == s__s3__tmp__next_state___0 || 4560 == s__s3__tmp__next_state___0))) || ((3 == s__s3__tmp__next_state___0 || 4560 == s__s3__tmp__next_state___0) && 3 == s__state) - InvariantResult [Line: 145]: Loop Invariant Derived loop invariant: ((!(4384 == s__state) && s__state <= 4432) && !(5 == blastFlag)) && (s__state <= 3 || 4352 <= s__state) - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: (((!(blastFlag == 4) && !(4384 == s__state)) && s__state <= 4432) && !(5 == blastFlag)) && (s__state <= 3 || 4352 <= s__state) - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: ((!(5 == blastFlag) && 4560 == s__state) && (3 == s__s3__tmp__next_state___0 || 4560 == s__s3__tmp__next_state___0)) || ((!(blastFlag == 4) && !(5 == blastFlag)) && 4560 <= s__state) - InvariantResult [Line: 157]: Loop Invariant Derived loop invariant: (4432 <= s__state && !(5 == blastFlag)) && s__state <= 4480 - InvariantResult [Line: 133]: Loop Invariant Derived loop invariant: ((!(blastFlag == 4) && s__state <= 4432) && !(5 == blastFlag)) && (s__state <= 3 || 4352 <= s__state) - InvariantResult [Line: 187]: Loop Invariant Derived loop invariant: (!(5 == blastFlag) && 4512 <= s__state) && s__state <= 4528 - InvariantResult [Line: 181]: Loop Invariant Derived loop invariant: (4432 <= s__state && !(5 == blastFlag)) && s__state <= 4512 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: (((!(blastFlag == 4) && !(4384 == s__state)) && s__state <= 4432) && !(5 == blastFlag)) && (s__state <= 3 || 4352 <= s__state) - InvariantResult [Line: 151]: Loop Invariant Derived loop invariant: (4432 <= s__state && !(5 == blastFlag)) && s__state <= 4448 - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 205]: Loop Invariant Derived loop invariant: (((!(blastFlag == 4) && !(5 == blastFlag)) && (s__state <= 3 || 4352 <= s__state)) && s__state <= 4352) || (((!(5 == blastFlag) && (s__state <= 3 || 4352 <= s__state)) && s__state <= 4352) && (3 == s__s3__tmp__next_state___0 || 4560 == s__s3__tmp__next_state___0)) RESULT: Ultimate proved your program to be correct! [2021-11-23 03:46:51,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c76223-6c36-40a5-bb49-685fd9e6a12e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE